Hi All, On 20-May-26 17:32, [email protected] wrote: > 3. Similar to the ope_input /dev/video# to ope_proc pad 0 propagation, > for the try stuff automatically propagating info from ope_proc pad 2 > to ope_disp pad 0 will also not work. In this case it might be best to > just completely disable auto-propagation and rely on userspace to do > this itself even for the active state. Or you could do the > v4l2_subdev_get_locked_active_state() thing again. > > You can check userspace has done this properly by calling > media_pipeline_start() at stream-on time, which ensures that enabled > source -> sink pad links agree on the format on both sides. > You should probably call media_pipeline_start() regardless.
Correction this is superseeded by note 6: > 6. There should be no propagation from /dev/video# nodes to pads, instead > a validate_link media-entity op should be used to check userspace has > properly made these line up on stream-start So no propagation from [try|set]_fmt on /dev/video# to subdev pads should happen at all. Regards, Hans (also sorry for not cutting the large rest of the patch in my previous reply)
